It is likely a remnant of non-PF_INET families under SOCK_STREAM. There is no SHUT_RD in TCP by design.
Sockets are known to be not very standard landscape historically. Best bet here is to just stick with that “Disables further receive operations” posix definition and follow it to the letter by not recv’ing anything anymore.
Sockets are known to be not very standard landscape historically. Best bet here is to just stick with that “Disables further receive operations” posix definition and follow it to the letter by not recv’ing anything anymore.